Maximum demand meter



March 1 1927.

' F. C. HOLTZ MAXIMUM DEMAND METER Filed May 23. 1921 2 Sheets-.Sheet l i EM l IVN ...u is...

March 1, 1927. l

F. c. Ho| Tz MAXIMUM DEMAND METER Filed Ma 25. 1921 2 Sheets-Sheet 2 f5 19 im@ Patented `Mar.. l, 1927.. y y l p i UNITED STATES FFICE.

FREDERICK C. HOLTZ, OF SPRINGFIELD, ILLNQS, .PaSSIGl'QR TO SANGAMO ELECTRC COMPANY, OF SPRINGFIELD, ILLINQS, A CGRFOBATON F LLINOIS.

MAXIMUMDEMAND METER.

Application filed May 23, 1921.. Serial No. 471,924.

My invention relates to electricity meters This object l accomplish as illustrated in and has particularly to do with integrating the accompanying drawings and as hereinmeters equipped with auxiliary means for after described. `What l regard as new is indicating the maximum power or energy set forth in the claims. consumption during any ot a number of ln the accompanying drawings,- 60 equal time intervals making up the usual Fig. 1 is an end elevation showing a maxiaccounting period. Such meters as heretomum demand meter attachment which, so fore constructed are usually provided with far as its fundamental principles of conan indicating hand which during the first struction are concerned, is well adapted for interval, which may be any suitable predeapplication to any standard integrating 65 termined length ot time, is advanced over watt-hour meter;

a dial plate at a speed proportionate to the Fig. 2 is a detail being a section on line indicating mechanism ot the integrating 2-2 of Fig. 1;

meter. The mechanism which actuates this Fig. 3 is a partial vertical section on line maximum demand indicator is then auto- 3 3 of Fig. 2; 7C

' matically reset to its initial position while Figs. 4f, 5 and 6 are details illustrating the the indicator remains stationary at the operation of the resetting devices;

point to which it had been advanced, unless Fig. 7 is a perspective view showing a porduring the next interval the consumption tion of the resetting arm;

of energy should be greater, in which case Fig. 8 is a perspective view illustrating 75 the indicator would be correspondingly the trigger carried by said arm; further advanced until the end of the second F ig. 9 is a front view of the dial plate of interval. This operation is repeated during a meter showing the maximum demand indiv the remainder ot the accounting period, cator and the scale associated therewith; usually a month, and, therefore, obviously, Fig. 10 is a view showing the gear 80 the position of the maximum demand indithrough which the operation of the maxicator at the end of the accounting period mum demand indicator actuating devices is will show the greatest amount of energy concontrolled, and also the ratchet wheel and sumed during any one of the predetermined pawl by which resetting ot such actuating periods. At the end oi' the month the meter mechanism independently of the integrat- 85 reader resets the maximum demand indiing meter is permitted; and cator to its initial position and the appara- Fig. 11 is a perspective view illustrating tus then again operates as above described. schematically the relation ot the several It is, of course, necessary that in meters of parts of the apparatus. this description the maximum demand indi- Referring irst to Fig. 11 for a general 90 cator be operated correlatively with the indescription of the combined apparatus gotegrating meter so that it will indicate coring to make up the meter as a whole, 12 inrectly the amount ot energy consumed durdicates the usual driving spindle of an ordiing the time while it is being actuated, and nary watt-hour meter, and 13 the usual it is also highly important that the devices worm carried by said spindle for actuating 95 for resetting the actuating mechanism for the registeringtrain or integrating mechasuch indicator shall perform their work as nism, most of which is not illustrated as it nearly instantaneously as possible to avoid is not necessary to an understanding of my error in the energyconsumption registered present invention. 14 indicates the maxiby said indicator. It is also necessary to so mum demand indicator which is preferably 100 provide for actuating the several operating in the form of a hand having a hub 15 parts of the maximum demand indicator which is mounted upon a shaft 16. The inthat they will not impose an appreciable dicator 14 operates over a scale 17, which burden upon or interfere with the operation in the illustration of Fig. 9 is shown as be- .50 ofthe integrating meter and thereby impair ing secured to the usual dial plate 18 of the 105 its accuracy. To provide a maximum dewatt-hour meter. The hub 15 is pro-vided mand vmeter which will meet these require` with an operating arm 19 arranged oppoments and which at the same time will be sitely to the indicator hand 14 and provided simple in construction and efficient in operawith an anti-:tri i roller This roller tion is the object of my present invention. is adapted to d by arm 21 110 which is mounted on and keyed to a rockshaft 22 alined with the shaft 16, thev arm 21 being arranged so that by rocking the rock-shaft 22 in a clockwise direction as viewed in Fig. 11 it will move into engagement with the roller 2O and through it swing the indicator 14 in a clockwisedirecrso tion. Torque is imparted to the rock-shaft 22 tending to rotate it ina clockwisedirec- .tion by means ofa torque member in the l form of a spring 23, one end of which is 'connected to a collar 24 secured to said shaft, the other end of said spring being connected with a xed part, as the frame 25 of the apparatus. It will be obvious that inasmuch as the spring 23 tends to rotate the shaft 22 in a clockwise direction as viewed in Fig. 11 if said shaft be rotated in the opposite direction theV spring 23 will be wound u l l j In or er to correlate the rotation of the rock-shaft.' 22.,with thel integrating meter mechanism said shaft is rovided with a ratchet wheel 26V which is eyed thereupon, and with a gear 27 which is loose upon said shaft but is o eratively connected therewith by a light springfpawl 28 which engages the ratchet. wheel'26; Consequently the shaft 22 cannot rotatefindependently of the gear 27' in a clockwise direction'as viewed in Fig.'

11, but said shaft,`with the ratchet Awheel 26, may be rotated in the opposite direction independentlyv of the gear 27 because in that case the pawl 28 will ride over the teeth' of said ratchet wheel. The gear A27 meshes with a pinion 29 which is operatively con'- nected with the worm 13 by a gear 30 and shaft 31. By this construction, as the rate manifest that when thew'att-hour meter' is not operating the rock-shaft 22 will .also be at rest, but as soon as the watt-hour meter begins to operate theshaft 22 will rotate in' a clockwise direction, and 'if the indicator 14 is then in its initial position, orV in other words opposite the zero indication on the scale, said hand will begin to swing to the right as viewed in Figs. 9 and' 11, and willl continueto so move as longas 'the rock-shaft 22 continues its rotation in the same direction, without hein@ reset. Assuming now for convenience o? description that the redetermined time intervals according to w ich the maximum demand' is to be determined are each of five minutes duration,

it is necessary that the indicator be Aallowed .to come to rest at the end of the first live minute periodl and that the actuating mechanism thereof be returned to its initial position for a fresh start at the beginning of the next period. c This resetting mechanism', which is the principal feature of my present invention, lwill now be described. Loosely mounted upon the shaft 22 is a sleeve 32 lto which is ixedly secured a worm wheel 33. This worm wheel meshes with a worm 34 carried by a shaft 35 which carries a second worm wheel 36 meshing lwith a worm 37 carried by the spindle 38 of an approximately constant speed electric motor 39 which is mounted in the frame 25. This .motor is arranged' to rotate in such direction as to rotate the worm-wheel? 33, and consequently theA sleeve 32, in a counterclockwise direction as viewed in'Fi 11. It is not believed to be necessary'to escribe specifically the construction of the motor 39 as 'any approved motor suitable for the purpose mayv is connected to the eccentric. The arrangement is such that the rotation Vof the sleeve 32 and eccentric 40 ina counterclockwise direction as lviewed in Fig. 11 while the resetting arm 41 is held stationary, will operate to'wind up the spring 42,`and consequently said'spring tends to rotate the resetting arm 41 in a counterclockwise direct-ion. The spring 42 is sufficiently strogerthan the spring 23 to enable the s ring 42 -to rotate the shaft 22 in a counterc ockwise direction against the tension of the s ring 23, which foperation is necessary as will hereafter be explained.

' The resetting arm 41 carriesiat its outer end a trigger 43, the shapeof ,which is best shown in Fig. 8. This trigger is-mounted on a pivot 44 So that it-may rock freely, and is provided with a shoulder 45 and with a laterally projecting finger 46, the functions of which will be hereinafter described.' The finger 46 is adapted normally to rest upon a stop 47 provided at the outer end portion of the arm 41, as shown in Fig. 7, and it is normally held in this position by a light spring 48, 'as best Shown in Fig. 6. When .outer end portion of an arm 49 which is mounted upon' and keyed to the rock-shaft 22 adjacent to the eccentric 40, as best shown in-Fig. 11, but by rocking the trigger 43 in a clockwise direction to the position shown no l' in full lines in Fig. 3 and by dotted lines in Leraars in Fig. T the arm 41 is provided at its outer end with a. shoulder 50 so arranged that when the linger 46 rests on the stop 47, as shown in Figs. 5. 6 and 11, the fiat face ot the shoulder 45 ot' the trigger 43 will be slightly in advance of the corresponding l'ace ot the shoulder 50. so that by pressing back on the face 45 ot' the trigger 43 the trigger may be rocked in a. clockwise direction as viewed in Fig. 3 suliiciently to carry the linger 46 up to the position shown in Fig. 3 and in dotted lines in Fig. 4. The initial position of the arm 49 is determined by a. laterally-projecting pin or stop 51 carried by the frame against which `said 'arm is adapted to bear when in such position` a similar-stop 52 being preferably provided at a diametrically opposite point to limit the movement of said arm beyond that point. The resetting arm 4l is arrested at the end of its resetting stroke by a stop 53 in the form of a bar which is secured to the frame of the apparatus in position to intercept the shoulder 50 of said arm and the shoulder 45 of the trigger 43. as will be more fully hereinafter described, and a Similar stop 54 is provided at a point diametrically opposite the stop 53 to arrest said arm after its release from stop 53 and hold it stationary While the eccentric makes a half revolution.

Having in mind the structural features above pointed out, it will be readily understood that ordinarily the resetting arm 41 will occupy either the position shown in Fig. 3 or that shown in full lines at the bottom of Fig. 4. That is to say, the shoulders 45, of the trigger 43 and arm 41, respectively` will either be in engagement with the stop 53 or with the stop 54. Under such conditions said shoulders will be at their greatest distance from the axis of the`rock-shaft 22, as the eccentric 40 is so adjusted as to accomplish that end. Since with the parts in this position the linger 43 will be raised high enough to clear the arm 49, it will be evident that the shaft 22 will be 'free to rotate in a clockwise direction carrying with it the arms 49 and 21. At the same time, owing to the constant rotation of the worm wheel 33 under the action of the motor 39, the eccentric 40 will be rotating in a countercloekwise direction, thereby gradually moving the resetting arm 41 inward or toward the axis ot' the shaft 22 until ultimately the shoulders 50 and 45' will move far enough 4to disengage the stop 53 or 54 as the case may be, thereby releasing the arm 41 and permitting it to rotate in a counterclockwise direction under the action of the spring 42. when this takes place the arm 41 is in the position shown in dotted lines in Fig. 4. said arm will swingaround to the position shown in full lines in said figure Where it will be stopped by the stop 54. Here it will remain in readiness for its resetting stroke until the eccentric 40 rotates through an arc of about 1800 when it will again be released in the same manner as before and will then rot-ale into engagement with the stop 53. As the trigger linger 46 resumes its normal or operative position as soon as the trigger clears the stop 53 'it will he in position to intercept the arm 49 at whatever position that arm happens to occupy as a result ot the clockwise rotation of the shaft 22 during the period just ending, and con sequently on its resetting stroke the resetting finger 41 will carry the arm 49 back to its initial position, without, however, affecting the position ot the maximum demand indicator. This operation iS illustrated in Figs. 4, 5 and 6. At the bottom of Fig. 4 the resetting arm 41 is shown as being in engagement with the stop 54; in Fig. 5 the arm 49, after having been advanced during a predetermined time interval, is about to be engaged by the trigger finger 46; in Fig. 6 the engagement is shown as having taken place; and at the upper part of Fig. 4 the arm 49 is shown as having' been returned to its initial position, while the arm 41 and trigger 43 are illustrated in dotted lines in the position which they occupy justas they are being released from the stop 53. As the resetting action ot the arm 41 1s performed under the torque of the spring 42 and is resisted by the spring 23 connected with the rock-shaft 22, obviously it is necessary that the spring 42 be stronger than the spring 23. The spring 42 is always maintained under the proper tension by the operation of the motor 39, and as the resetting operation accomplishes a. rewinding of the spring 23 that spring is also kept under proper tension.

From the foregoing description it will be seen that with the maximum demand indicator 14 in its initial position, when the integrating meter is actuated the consequent rotation of the rock-shaft 22 will etfect'a corresponding or proportionate movement of said indicator through the action of the arm 21 on the roller 20, and this will continue until the end of the first predetermined period, when, as above described, the direction of rotation of the rock-shaft 22 will be reversed by the resetting mechanism, leaving the indicator 14 at the point to which it has been advanced. Any suitable means may be employed for causing the hand 14 to remain stationary, such as a friction spring arranged to bear on the hub 15 of said indicator. It during the next interval a less amount of current is consumed the' arm 21 will not swing tar enough to engage the roller 20 so that the indicator 14 Will not be advanced, and at the end of that interval the arm 21 will again be reset to its initial position, and the apparatus will continue to indicator 14 until te energy consumed dur-A ing any succeeding interval is greater than .that consumed during the first interval,

whereupon the indicator 14 will be advanced the proper distance to indicate such` excess and'will then remain in such position until the previous maximum .is exceeded. The result is that ithe position of-the indicator 14 at the end ofv the accounting period will show the maximum energy consumption during any one of the intervals included in the accounting period.

An important advantage of mv improved constructlon is that the resetting operation is performed almost instantaneously, and consequently notwithstanding the fact that the integratlngmeter may be in operation, as it usually is, at the time of resetting, the resetting is accomplished without impairing the accuracy of the maximum demand indicator, since the actuating devices therefor are practically constantly responsive to the controlling operation of the Watt-hour meter, ivhich is. not the case in constructions in which any appreciable length of time is required for the resetting operation. v

l The stop: 53 is made 1n the form of a flat bar for the purpose of holding .the trigger finger 46 in its elevated position until after it has passed over the arm 49 in case that arm should be in its initial position at the' time of the release of theresetting arm 41 der 50 will engage saidstop. As has been by the action of the eccentric 40, as herein.` before described, which would be the case if there Were no current consumption during that time. The second stop 54 is provided to arrest the resetting arm 41 until the eccentric makes a half rotation,A or in other words turns to the position necessary to'project the arm- 41 so that when it next moves Y into engagement with the stop 53 its shoulexplained, the eccentric operates to move the resetting arm 41 radially and said arm engages the stops 53, 54 only when it is, pro'- jected beyond the point of its mean distance from the axis of the rock-shaft 22. When, therefore, the saidlarm 41 is released from one of ,the stops, as 53, by the rotation of saidA eccentric and swings around into enf gagement with the op osite stop, as 54, its:

relation to the eccentrlc is reversed. It is, therefore, necessary Athat the eccentric be allowed to move through approximately an arc of 180 while the arm 41 is at rest, so

4.the stop 54 need not operate to vhold/the asit does not havel to trigger finger 46 out of operative position pass., the arm 49 at thatpoint. y

Leraars While l' have described specically the embodiment of my invention illustrated in the accompanying drawings, I wish it to be understood that my invention is not limited to such particular construction except in so far. as it is specifically claimed, but includes such variations or modifications as would occur to those skilled in the art.

V What l claim as my invention and desire to secure by Letters Patent, is-

1. In a maximum demand meter of the type having an indicator, and actuating mechanism therefor correlated with the meter and adapted)to be reset independently thereof, a resetting device comprising an approxnnately constant speed motor, a resetting member, means for actuating said `member, a xed stop adapted to be engaged said motor and operating to move said member radially to release it from said stops, and means for rotating said member.

3. 'In a -maximum 'demand meter of the typehaving an indicator and actuating mechanism therefor correlated with the meter and adapted to be reset independently thereof, a resetting device comprising an approximately constant speed motor, an eccentric constantly rotated by said motor, and rotatable means the operation of which is controlled by the operation of said eccentric for restoring the indicator-actuating melchanism to its initial position at interva s.

4. In a maximum demand meter of the type having an indicator and actuating mechanism therefor correlated with the-meter and adapted to be reset independently thereof, a resetting device, comprising an approximately constant speed motor, a resetting arm, means for rotating said. arm, a stop adapted to be engaged by said arm, and an eccentric constantly driven by said motor and opera-ting to release said arm from said sto 5I.) ln a maximum demand meter of the type having an indicator and actuating mechanism therefor correlated..w,ith the meter and adapted to be reset independently thereof, a resetting device comprising an approximately constant speed motor, a resetting arm, a` spring for rotating said arm, a stop adapted to be engaged by said arm, and

an eccentric constantly 'driven' by said motor and operating to release said arm from said stop.

6. In a maximum demand meter of the type having an indicator and actuating mechanism therefor correlated With the meter and adapted to reset lindependently thereof, a resetting device comprising an approximately constant speed motor, a resetting arm adapted to rotate, oppositely-disposed stops adapted to be engaged by said arm, an eccentric constantly driven by said motor and operating to release said arm from said stops, and means for rotating said arm.

7. In a maximum demand meter of the type described, a resetting device comprising a rotating support having an eccentric, a stop, a resetting arm loosely mounted on said eccentric and movable thereby into and out of position to be engaged by said stop,means for rotating said support at an approximately constant speed, and means for rotating said arm upon said eccentric.

8. In a maximum demand meter of the v.type described, a resetting device comprising a rotating support having an eccentric, a-

stop, a resetting arm loosely mounted on saidv eccentric and movable thereby into and out of position to be engaged by said stop,means for rotating said support at an approximately constant speed, and a spring connected with said support and with said arm and adapted to rotate said arm upon said eccentric.

I9. In a maximum demand meter of the type having an indicator, an actuating device therefor in the form of a rock-shaft having means for actuating said indicator when said shaft is rocked in' one direction, and a ixed arm, a resetting device comprising a sleeve mounted on said rock-shaft, means for rotating said sleeve at an approximately-constant speed, a resetting arm carried by said sleeve, means carried by Asaid resetting arm adapted to engage the arm carried by said rock-shaft when the latter is away from its initial position and to pass said arm when the latter is in its initial position, and means for rotating said resetting arm upon said sleeve at regular intervals to return the arm carried by said rock-,shaft to its initial position.

l0. The combination with a maximum demand indicator-actuating device comprising a rock-shaft, means carried thereby Kfor actuating said indicator, and an arm carried by said rock-shaft, of a resetting device comprising a sleeve loosely mounted on said rock-shaft, an eccentric secured -to said sleeve, a resetting arm mounted on said eccentric, a spring connecting said resetting arm with said eccentric and adapted to rotate said arm thereupon, means carried by said resetting arm adapted to engage the arm carried by said rock-shaft When the latter is away from its initial position, a stop for determining the initial position of the latter arm, and a stop for temporarily' arresting said resetting arm at the end of its operating stroke.

1l. The combination With a maximum demand indicator-actuating device comprising a rock-shaft, means carried thereby for actuating said indicator, and an arm carried by said rock-shaft, of a resetting device comprising a sleeve loosely mounted on said rock-shaft, an eccentric secured to said sleeve, a resetting arm mounted on said eccentric, a spring connecting said resetting arm with said eccentric and adapted to rotate said arm thereupon, means carried by said resetting arm adapted to engage the arm carried by said rock-shaft When the latter is away from its initial position, a stop for determining the initial position of the latter arm, and a stop for temporarily arresting said resettingarm at the end of its operating stroke, said resetting arm being movable out of engagement with said stop by the operation of said eccentric.

l2. In a maximum demand meter of the' type having an indicator, an actuating device therefor in the form of a rock-shaft having means for actuating said indicator when said shaft is rocked in one direction, and a ixed arm, a resetting device comprising a sleeve mounted on said rock-shaft, means for rotating said sleeve at an approximately-constant speed, a resetting arm carried by said sleeve, a trigger carried by said resetting arm adapted-to engage the arm carried by said rock-shaft When the latter is away from its initial position, means for moving said trigger out of operative position when said arm is in its initial position, and means for rotating said resetting arm upon said sleeve at regular intervals to return the arm carried by said rock-shaft to its initial position.

13. In a maximum demand meter of the type having an indicator, an actuating device therefor in the form of a rock-shaft having means for actuating said indicator when said shaft is rocked in one direction, and a fixed arm, a resetting device comprising a sleeve mounted on said rock-shaft, means for rotating said sleeve at an approximatelyconstant speed, a resetting arm carried by said sleeve, a trigger carried by said resetting arm adapted to engage the arm carried by said rock-shaft when the latter is away from its initial position, a stop for moving said trigger out of operative position when said arm is in its initial position, and means for rotating said resetting arm upon said sleeve at regular intervals to return the arm carried by said rock-shaft to its initial positype having an indicator, and actuating mechanlsm therefor correlated with the meter and adapted to be reset independently thereof, a resetting device comprising a rotary resetting member, fixed means for normally holding said member against rotation, and means for eiecting the operation of said resetting member at regular intervals.

15,. In a maximum demand meter of the type having an indicator and actuating mechanism therefor correlated with the meter and adapted to be reset independently thereof, a resetting device comprisin a spring-actuated rotary resetting mem er, fixed means for normally holding said member a ainst operation, and means for effecting t e operation of saidA resetting member at regular intervals.

16. In a maximum demand meter of the type having an indicator, and actuatingmechanism therefor correlated with the meter and adapted to be reset independently thereof, a resetting device comprising a -rotary resetting Lmember, fixed means for normally'holding said member against rotation, a motor, and means actuated by said motor for moving said resetting member out of operative relation to said holding means at' regular intervals. i

17. In a maximum demand meter of the type having an indicator, and actuating mechanism therefor 'comprisin a rock-shaft movable in one direction un er control of the meter to actuate said indicator and in the Yopposite direction for resetting purposes, a

resetting device comprising a resetting member rotatably supported by said rock-shaft), means carried by said rock-shaft and adapted to be actuated by said resetting member.

to reset said rock-shaft, means for normally holding 'said resetting member against rotation, and means for releasing said -resetting member from said holding means at.

regular intervals. ,A

18. In a maximum demand meter of the type having an indicator, and actuating mechanism therefor comprisin a rock-shaft movable in one direction un er control of the'meter to actuate said indicator and in the opposite direction for'resetting purposes, a resetting device comprising a resetting member rotatably supported-by said rock-shaft, means carried by said rock-shaft and adapted to be actuated by said resetting member to reset said rock-shaft, means for normally fixed stop for temporarily arresting said resetting member, a motor, and means actu- A ated by said motor for moving said resetting member'to release it from said stop lat regular intervals.

20. In a maximum demand meter of the type having an indicator .and actuating mechanism therefor correlated with. the meter and adapted to be reset independently thereof, a resetting device comprising a rotary and radially movable resetting member,l a stop for temporarily arresting said resetting member, means for rotating said resetting member, and means for movingsaid resetlting member radially` to release it from said stop at regular intervals. -1

21. In a maximum demand meter of the type having an indicator and actuating mechanism therefor correlated with the meter and adapted to be reset independently thereof, a resetting device comprising a rotary and radially movable resetting member, oppositely-disposed stops adapted to be engaged by said resetting member, means for rotatmg said resetting member, and means for moving said resettingmember radially to release 1t from one or the other of ,said stops at regular intervals.

22. In a maximum demand meter of the type having an indicator and actuating mechanism therefor correlated with the meter and adapted to be reset independently thereof, a resetting device comprising a rotary and radially movable resetting member, a stop for temporarily arresting said resetting member, 'an approximately. constant speed motor, and means operated by said motor for moving said resetting member radially to release it from said stop at regular intervals.

y23. In a maximum demand meter of the type having an indicator and actuating mechanism therefor correlated with the meter and adapted to be reset independently thereof, a resetting device comprising a n rotary and radially movable resetting member, a stop for temporarily arresting said resetting member, an approximately constant speed motor, means operated by said motor forl moving said resetting member radially to release it from said stop at regular intervals, and a spring for rotating said resetting member..

24. In an integrating meter, the combination with a .maximum demand indicator, andl indicator-actuating means comprising a rock-shaft, means operating to. actuate said indicator when said shaft is rocked in a forward direction, and a spring for rotating said shaft in a forward direction, of a rotary resetting member for returning said indicator-actuating means to its initia position, and a/stronger spring acting in opposition to said first-mentioned spring for -rotating said resetting member.

lll

tion with a maximum demand indicator, and indicator-actuating means comprising a rock-shaft, means operating to actuate said indicator when said shaft is rocked in a forward direction, and a spring for rotating 20 said shaft in a forward direction, of a rotary resetting member for returning said indicator-actuating means to its initial position, a stronger spring acting in opposition to said first-mentioned spring for rotating 25 said resetting member, an approximatelyconstant speed motor, and means actuated by said motor for controlling the operation of said resetting member.

FREDERICK C. HOLTZ. 

